PROGEN

This repository contains the code for our paper “ProGen: Progressive Zero-shot Dataset Generation via In-context Feedback”. The implementation is built on the source code from ZeroGen.

If you use this code, please cite our paper:

@inproceedings{ye-etal-2022-progen,
    title = "{P}ro{G}en: Progressive Zero-shot Dataset Generation via In-context Feedback",
    author = "Ye, Jiacheng  and
      Gao, Jiahui  and
      Wu, Zhiyong  and
      Feng, Jiangtao  and
      Yu, Tao  and
      Kong, Lingpeng",
    booktitle = "Findings of the Association for Computational Linguistics: EMNLP 2022",
    month = dec,
    year = "2022",
    address = "Abu Dhabi, United Arab Emirates",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2022.findings-emnlp.269",
    pages = "3671--3683"
}

Setup

All requirements for PROGEN can be found in requirements.txt. You can install all required packages in a new environment with pip install -r requirements.txt.

Usage

The scripts/run_main.sh scripts contain the running commands for the following methods:

• SUPERVISED: supervised learning with human annotations;
• PROMPTING: prompt-based zero-shot learning;
• PROMPTING*: prompt-based zero-shot learning with calibration by setting --calibrate in prompting;
• ZEROGEN: efficient zero-shot learning via dataset generation by setting in_context_type=none;
• PROGEN: progressive dataset generation via in-context feedback.

We track the performance of the small model in the data generation procedure. Before running, you need to reset the following parameters to yours:

• batch_size: the batch size for generating with PLM. For SST-2, it costs ~16G when using a batch size of 32 with gpt2-xl. So decrease the batch size if needed;
• WANDB_PROJECT: project name, by default ProGen;
• WANDB_ENTITY: your wandb username;
• WANDB_API_KEY: your api-key.

By default we use GPT2-XL as pre-trained language model (PLM) and DistilBERT as tiny-task model (TAM), to modify the size of PLM and TAM, you can change model_name and small_model_name in run_main.sh scripts. We also include the API-based inference, i.e., OPT 175B, where we generate dataset through a black-box API.

Run with a synthesized dataset

After dataset generation, we save the synthetic dataset at out-${task_name}-x2/${dataset}/${task_name}-dataset.jsonl. The file is in json line format (e.g., {"C": "The Book of Mormon Musical", "X": "The Book of Mormon Musical brings all the drama and excitement of a real revival of the Broadway production to the big screen.", "Y": 0}).

To run DistilBERT or LSTM given a generated dataset, you can use the scripts/run_tam_training.sh script.

Experiments of Influence Function

To experiment the effectiveness of influence function when the validation set is noisy, run bash scripts/run_IF_exp.sh. You can see the effectiveness of IF is highly affected by the noise of the validation set (Paper Fig.6), and using RCE as loss function reduces such effect.

Here is the output after running with obj=ce (upper) and obj=rce (lower) on SST-2, where the identified helpful examples are removed and the resulting data is used to training the small model. We can see rce loss well identifies the helpful instances in the training set when the validation set contains 40% noise.